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Osa Weather (Next 3 days): The snow forecast for Osa is: Moderate rain (total 18.0mm), heaviest on Wed morning. Mild temperatures (max 9°C on Tue afternoon, min 1°C on Mon afternoon). Winds increasing (calm on Mon night, fresh winds from the S by Tue night).
Osa Weather (Days 4-6): Mild with light rain (total 2.0mm) on Thu morning Becoming colder with a light covering of snow, mostly falling on Fri morning. Freeze-thaw conditions (max 6°C on Thu morning, min -5°C on Thu night). Winds decreasing (strong winds from the WNW on Thu night, calm by Sat morning).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 0 |  | ||||
| Bottom Lift: | 4 | |
Latest snow reports near Osa:
Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | Saturday 27 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
| |  |  | |  |  |  | | |  |  | | | |  | |  | |
some clouds | some clouds | some clouds | clear | clear | light rain | mod. rain | light rain | light rain | light rain | light snow | light snow | light snow | light snow | light snow | cloudy | cloudy | cloudy | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 2 | 4 | — | — | — | |
— | — | — | — | — | 2 | 8 | 5 | 3 | 2 | — | — | — | — | — | — | — | — | |
max °C | 4 | 4 | 1 | 8 | 9 | 7 | 9 | 9 | 7 | 6 | 1 | -2 | -2 | -2 | -3 | 0 | 0 | -1 |
min °C | 2 | 1 | 1 | 4 | 4 | 5 | 7 | 8 | 6 | 5 | 0 | -5 | -3 | -3 | -4 | -2 | -3 | -3 |
-2 | 0 | 1 | 2 | 0 | 1 | 3 | 6 | 4 | 0 | -7 | -15 | -11 | -10 | -6 | -2 | -8 | -8 | |
86 | 76 | 59 | 41 | 45 | 66 | 98 | 99 | 99 | 92 | 81 | 82 | 88 | 85 | 95 | 81 | 83 | 91 | |
1000 | 1100 | 1900 | 2650 | 2550 | 2700 | 2750 | 2450 | 2150 | 1600 | 850 | 150 | 250 | 350 | 350 | 350 | 650 | 300 | |
 | 7:13 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:16 | — | — | 7:16 | — | — |
 | — | 5:04 | — | — | 5:04 | — | — | 5:05 | — | — | 5:05 | — | — | 5:06 | — | — | 5:06 | — |
Moderate rain (total 18.0mm), heaviest on Wed morning. Mild temperatures (max 9°C on Tue afternoon, min 1°C on Mon afternoon). Winds increasing (calm on Mon night, fresh winds from the S by Tue night).
Mild with light rain (total 2.0mm) on Thu morning Becoming colder with a light covering of snow, mostly falling on Fri morning. Freeze-thaw conditions (max 6°C on Thu morning, min -5°C on Thu night). Winds decreasing (strong winds from the WNW on Thu night, calm by Sat morning).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 13 Dec 2025 |
| Snow Alerts | Create Alert |
0.1 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.1 | Powder days Fresh snow, limited sun, any wind. |
0.2 | Bluebird days Average snow, mostly sunny, light wind. |
The above table gives the weather forecast for Osa at the specific elevation of 700 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Osa. To access the weather forecasts for the other elevations, use the tab navigation above the table. For a wider view of the weather, check out the Weather Map of Japan.
Click here to read further information on freezing levels and how we forecast our temperatures.
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